Runtime evaluation: Difference between revisions
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=={{header|J}}== |
=={{header|J}}== |
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Use the monad ". to execute a string. |
Use the monad [http://www.jsoftware.com/help/dictionary/d601.htm ".] to execute a string. |
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http://www.jsoftware.com/help/dictionary/d601.htm |
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<lang J> |
<lang J> |
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". 'a = |
". 'a =: +/ 1 2 3' NB. execute a string to sum 1, 2 and 3 and assign to noun a |
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</lang> |
</lang> |
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Or, use the conjunction [http://www.jsoftware.com/help/dictionary/d310n.htm :] to create various kinds of functions and evaluate them. Arguments have names which as specified by the language definition. For example: |
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<lang J>(3 : '+/y') 1 2 3</lang> |
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Rules of scope for such functions match those described on the [[Scope modifiers]] page. |
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=={{header|Perl}}== |
=={{header|Perl}}== |
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